The main image on the front of the U.S. dollar banknotes is not the president, but the portrait of the famous scientist, politician, and financier Benjamin Franklin (1706-1790). The main color is black. The main scene pattern on the back is a building, and the main color is green, but there are few differences in the colors of different versions. For example, the back of the 1934 version is dark green, the back of the 1950 version is grass green, and the back of the 1963 version is all dark green. The signature above is that of the Minister of Finance, and different Ministers of Finance were responsible for different issuance years.

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Among the various U.S. dollar currencies issued in the United States, the Federal Reserve Note series includes face values ??of 500, 1,000, 5,000, and 10,000 U.S. dollars, and the gold coin certificates include 1,000, 10,000, and $100,000 face value. There are no other large-denomination banknotes with denominations above $100.

On March 9, 1933, U.S. President Roosevelt signed a presidential decree to terminate the circulation of gold coin certificates and withdraw them all regardless of denomination. By 1940, the recovery of gold coin coupons was completed. After 1946, the United States stopped issuing new large-denomination banknotes. By 1969, all large-denomination banknotes with a denomination of more than $100 were withdrawn from circulation.

The denomination numbers in the lower right corner of the front of the 1996 version of US$100, US$50, US$20, and US$10 are gravure-printed with optically variable ink. They appear green when viewed perpendicular to the face of the note, and turn blue when the banknote is tilted at a certain angle. color.

The denomination numbers in the lower right corner of the front of the 2009 version of US$100, US$50, US$20, and US$10 are gravure-printed with optically variable ink. They appear golden when viewed perpendicular to the face of the note, and turn green when the banknote is tilted at a certain angle. .

8. A blue dynamic security line was added to the color version of the $100 issued in 2013. When moving the banknote, the number "100" and the "Liberty Bell" pattern in the security line can be seen moving up, down, left, and right. Change pattern.